Gas-stove.



No. 659,400. P atented Oct. 9, I900. L. mum.

6A8 sTovE.

(Application filed Feb. 23, 1900.)

(lo Model.)

I I I Inventor 61.1 )Wmuo Attorney f Witsss:

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UNITED STATES PATENT OFFICE.

LAZARD KAHN, OF HAMILTON, OHIO, ASSIGNOR TO F. & L. KAHN & BROS., 'OF SAME PLACE.

GASgSTOVE.

SPECIFICATION formingpart of Letters Patent No. 659,400, dated. October 9, 1900.

I Application filed February 23, 1900. Serial No. 6 ,171. \No model.)

To all whom it may concern.-

Be it known that I, LAZARD KAHN, a citizen of the United States, residing at Hamilton, Butler county,Ohio, (post-office address Hamilton, Ohio,) have invented certain new and useful Improvements in Gas-Stoves, of which the following is a specification.

This invention pertains to improvements in gas-stoves, and is designed to improve the IO delivery of the combustible mixture of gas and air to the burners.

My improvements will be readily understood from the following description, taken in connection with the accompanying drawings, in which Figure l is a front elevation, part-vertical section, in plane of line b, of a portion of a gas-stove embodying in its construction an exemplification of my invention; Fig. 2, a

vertical section thereof in the plane of line a; Fig. 3, a plan; and Fig. 4c, a verticalsection, upon an enlarged scale, of a portion of Fig. 1. In the drawings, 1 indicates the body of an ordinary gas-stove; 2, the extreme top thereof provided with the usual gridwork over the burners; 3, the subtop disposed some distance below the extreme top and forming the floor of the burner-chamber; 4, the burnerchamber formed between the extreme top 2 and subtop 3; 5, a hot chamberas, for instance, an oven-in the body of the stove below the top burner-chamber; 6, the roof of hot chamber 5, forming also the floor of a flue above the hot chamber; 7, the flue between said subtop 3and chamber-roof 6; 8, a pipe-collar communicating with flue 7 and serving to carry away the waste products of combustion from the stove below the burner-chamber; 9, a burner under hot chamber 5 to heat such 4o chamber; 10, a conduit extending from the exterior of the stove-body inwardly to the desired point of location of a burnerin top chamber 4t, thisconduit serving to supply the mixture of air and gas to the burner and having a wall portion exposed in the hot passage 7 below subtop 3, the conduit being illustrated as cast in subtop 3 and extending from the front wall of the stove inwardly; 11, a coverplate disposed over the gutter-shaped recess referred to and forming, preferably, a separable roof for conduit 10; 12, a socket projecting upwardly from cover-plate 11 at the point where the top burner is to connect with conduit 10 13, a top burner having at its base a boss engaging with socket 12, whereby the interior of the burner is placed Within communication with conduit 10; 14, a similar arrangement of conduit for another top burner, Fig. 3 illustrating a relative disposition of conduits available where one top burner is located in front of another, while the separate gas admissions of the two burners are side by side; and 15, an admission-opening at the initial end of conduit 10 to receive the mixture of gas and air from the usual mixer.

In the ordinary operation of the top burners the subtop 3, forming the floor of the burnerchamber, receives a certain amount of heat, and some of this heat will become imparted to the mixture of air and gas passing through conduit 10 to the burner; but passage 7 for the hot products of combustion from the lower portion of the stove is a hot passage, and as conduit 10 has a portion of its wall exposed directly to the hot products within this passage it follows that the mixture of gas and air passing to the top burner through conduit 10 will become well heated, thus greatly improving the combustion, especially with certain qualities of gas with which gas-(stoves frequently have to deal, without being detrimental when employing any quality of gas thus far met with in my practical experience.

In exemplifying my invention I have selected a gas-stove of ordinary form and designed for gas only as afuel; but it is obvious that the system will well lend itself to stoves designed for the burning of solid and gaseous fuel alternately, as typified, for instance, in coal-stoves provided with auxiliary gas-burners in their chambers or flues.

I claim as my invention- In a gas-stove, the combination, substantially as set forth, of a sto ve-body, an extreme top and subtop forming a top burner-chamber in the stove, a flue or chamber for hot gases below said subtop, a conduit extending from the exterior of the stove inwardly to the desired location of a top burner and having wall-surface exposed to the hot gases below said subtop, and a burner disposed within said top burner-chamber and communicating with said conduit.

LAZARD KAHN.

Witnesses:

J. W. SEE, E. R. SHIPLEY. 

